Strange and singular, contrary to the usual course of nature, by which the gods give notice of evil.
Solid earthbound creations of nature, human or animal-like in form. Nonterrestrial entities, spectral apparitions that slip between worlds .
Man-made or nature in form, ancient creatures of the air and oceans, all manner of monstrous forms compelled to haunt our dreams and waking hours, perhaps to devour us from within, perhaps to enslave our souls or harvest our humanity.